Fix the math,
fix the deal.
The FBM-first profit calculator for Amazon arbitrage — with a buy-list pipeline, ungating tracker, and one-tap saving from any product page.
Targets
Buy-cost stacking
Presets save the discount stack only — buy cost stays per-deal.
Sale & fees
Projection
True buy cost after all stacking: $0.00/unit
Amazon US referral fees, checked Sep 2026 — verify in Seller Central — type your own fee to override.
Free. No account, no trial — just run your numbers.
Everything around the buy decision
Analysis tells you if a product works. ScoutMargin runs what happens next.
True buy-cost stacking
Store discounts, coupons, promos, tax, discounted gift cards, and cashback — stacked in the right order so your profit math reflects reality.
Buy-list pipeline
Save any calculation and work it from Watching to To buy to Bought. Your next buys, organized instead of scattered across tabs.
Ungating tracker
Track brand applications from not started to approved, with applied dates and notes — no more spreadsheets.
Storefront watchlist
Keep tabs on up to 5 seller storefronts free. The sellers you reverse-source, all in one place.
One-tap extension save
The Chrome extension drops any Amazon product straight into your buy list — ASIN, title, and price captured automatically.
Private by design
Your watchlists and deals are yours alone. Aggregated trends are never shared between sellers.
How it works
Three steps, built for how arbitrage actually happens.
Analyze
Run the numbers on any product by hand — or one-tap it from any Amazon page with the Chrome extension.
Save
Hit “Save deal” and it lands in your buy list with the ASIN, price, profit, ROI, and verdict attached.
Work the pipeline
Move deals from Watching to To buy to Bought. Track ungating in parallel. Buy with confidence.
Pricing
The calculator, buy list, ungating tracker, and 5 tracked storefronts are free — and they're staying that way. They'll never move behind a paywall. Paid tiers will only add what free doesn't do: automation and deeper workflow tools. Plans and pricing may shift as we build, but the free core won't.
Free — $0
Calculator, buy list, ungating tracker, up to 5 tracked storefronts, manual refreshes, and the free Chrome extension. The core product, not a disappearing trial.
Pro — $12/month, coming soon
Unlimited storefronts, automatic background monitoring with alerts, faster workflows, and no Pro upsell banner.
Premium tier (later): price history, rank signals, Buy Box history.
★ Founding Member offer
Join now: your first month of Pro is $6, and you lock the $12/month rate for life. Anyone with an account before paid plans go live qualifies — no catch, no card required today.
Create a free accountQuestions
Is it really free?
Yes — and the core stays free. Nothing that's free today will move behind a paywall; paid plans only add new capabilities (unlimited tracking, automatic monitoring, one-tap calculator auto-fill). When paid plans launch, early members become founding members: your first month of Pro is $6, and the $12/month rate is locked for life.
What's free?
The calculator, buy list, ungating tracker, and up to 5 tracked storefronts — free. Not a trial, not a teaser, they're just free. Paid plans will add the power stuff: unlimited tracking, automatic background monitoring, and alerts. But the core math every seller needs? That one's on the house.
Do I need to drop the tools I already use?
No — keep them for FBA. But on FBM deals, ScoutMargin is the sharper analysis tool: a calculator built FBM-first, with true buy-cost stacking (store discounts, gift cards, cashback, tax — in the right order) that generic estimators don't do. Run the same deal through both and compare the math.
Is it only for FBM?
The math is FBM-first, built for sellers fulfilling themselves. That's where the edge is right now.
Who can see my watchlists and deals?
Only you. Individual watchlists and buy lists are never shared with other users — that's a core rule, not a setting.
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